Scaffold.



H. BADE, JR.

SCAFFOLD. APPLICATION FILED JUNE 2.1915.

1 1 53,884. Patented Sept. 21, 191 5.

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ATTORNEY.

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HEINRICH B BE. JP, WUNSTORF, GERMANY- scAFroLn;

Specification of Iletters Patent.

Patented Sept. 21, 1915.

Application filed June 2, 1315; Serial No. 31,752.

' a citizen of the German Empire, residing at Wunstorf, Province ofHanover, German Empire, have invented certain new and usefulImprovements in scaffolds, of which the following is a full, clear, andexact description.

This invention relates to scafli'olds to be used for supporting workmenand material during the buildin shafts and the like wherein a plummet isused from which the direction of the shaft is determined.

The object of the invention is to provide a supporting means forsuspendingthe scaffold in such a manner that the use of the plummet willnot be interfered with and the scaffold will be held againstobjectionable tilting.

To this end, i have provided a scaffold having a stifl frameworktherebeneath to which a pair of parallel vertical rails are secured,offset a slight distance from the vertical axis of the scaffold andcarrying the means by which the rope which supports the scaffold ishoused and guided.

In order to render the present invention easily intelligible referenceis had to the accompanying drawing, in which- Figure 1 is a front View,partly in section, Fig. 2 a side View, partly in section and Fig. 3 aplan.

The bottom of the scaffold consists of a U-shaped iron ring a,transverse girders b and an angular iron-ring (Z, which latter carriesthe floor-planks c.

h is a pair of vertically arranged rails, which are U-shaped in such amanner, that, when laid together with their flanged parts they form abox-like shaft. These rails are arranged near the central plummet i. Thesaid rails [L are joined together by a pair of sheet metal plates 9,which extend through and beneath the bottom of the scaffold. That partof the said sheet metal plates extending downwardly through and from thescafiold platform is broadened in such a manner that its free endsembrace another U-shaped rail 9 so that a neighboring channel-like shaftis formed, through which the central plummet is passed. On the underside of the bottom of the scaffold and in close proximity to the sametransverse U- shaped girders b are arranged and supported in the ironring a. In the said transverse girders 1) sheet metal plates 0 arelocated and extend in a downward direction. Radial] y extending ties nare attached with their one ends to the sheet metal plates g and withtheir other ends to the said sheet metal plates 0.

7c is a rope, fastened to a bolt Z provided and fixed between the pairof rails at a point lying, a short distance above the upper part of thebottom of the scaffold. In the uppermost ends of the pair of rails thereis arranged a sleeve m, through which the rope is is passed, so that thesaid sleeve forms a guide for the rope.

I claim as my invention 1. In a scaffold, the combination of a platform;a stifi' frame-work supporting the platform; a substantially verticalsupport extending upwardly from a point slightly to one side of thecenter of the platform and secured to the framework; and a rope securedto said support.

:2. In a scaffold, the combination of a platform provided with a centralopening for the passage of a plummet; a suppqrt on said platform to oneside of the opening and formed with a box coaxial with the opening; anda rope secured to said support just above the platform and guided bysaid support a distance approximately three-fourths the width of theplatform.

3. In a scaffold for taking up workmen and material when buildingshafts, the combination of a platform; eccentrically arranged means onand above the platform for suspending the plat-forms, and for fasteningthe suspending rope; centrally arranged means on the underside of theplatform of the passage of a plummet, and means for connecting togetherand stiffening all the parts of the scaffold.

4. In a scaffold of the kind as described, the combination of a U-shapedring, of another angular ring located upon the said U- shaped ring,floor plates arranged on the said angular ring, transverse girders, apair of rails arranged eccentrically on and extending verticallyupwardly from the bottom, sheet metal plates attached to the j oiningparts of the said rails, extending downwardly through the bottomandhaving its parts below the bottom broadened, another rail, embraced bythe broadened portions of the sheet metal plates, means for stiffeningthe bottom, and means within the pair of rails for fastening, andguiding thei rop'e, -fastening andia sleeve m for gniding the 19substantially as described. rope, all substantially as described. 5. Ina scaffold of the kind as described,v In testimony whereof I afliX mysignature the combination of a U-shaped'iron ring a, in the presence oftwo Witnesses.

' a flan ed iron rin d floor lanks 0 trans: a 1

verse girders b, a pziir of anged a HEINRICH E, JUN. 7' sheet metalplates 9, a rail 9 sheet metal Witnesses: stiffening plates 0, radiallyextending ties n, W. WV. LINDSAY, a central plummet i, a rope is, a-boltZ--f0r R. 'PFLUEGER.

Copies ofthis patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Wa'shington',-D.'G.

